A Syrian child looks on in a basement used as a shelter against air strikes on March 25, 2018, in Douma, in Eastern Ghouta on the outskirts of the capital Damascus. Nearly 2,000 Syrian rebels and civilians began leaving a ravaged pocket of Eastern Ghouta on Matrch 25, in fresh evacuations that further emptied the former rebel bastion. Five weeks since the Syrian regime launched an all-out assault on Ghouta, it holds more than 90 percent of the onetime opposition stronghold on the edge of Damascus. (Photo by Hamza Al-Ajweh/AFP Photo)

Filipino children play in a makeshift pool on the street side in Manila, Philippines, 10 April 2018. The state weather bureau issued public warnings as temperatures start to climb. (Photo by Francis R. Malasig/EPA/EFE)

Bunia, Congo, the Democratic Republic of the Mave Grace, 11, whose arm was chopped off by militiamen when they attacked the village of Tchee, stands in an Internally Displaced Camp in Bunia, Ituri province, eastern Democratic Republic of Congo, April 9, 2018. According to witnesses, militiamen killed her pregnant mother, her three brothers and injured her sister, Racahele-Ngabausi. (Photo by Goran Tomasevic/Reuters)

A boy reacts as a monk shaves his head during a service to have an experience of the lives of Buddhist monks, at the Jogye Temple in Seoul, South Korea, Wednesday, May 2, 2018. Ten children who entered the temple to have an experience for three weeks ahead of celebrations for Buddha's upcoming birthday on May 22. (Photo by Lee Jin-man/AP Photo)

A competitor high kicks across the stage as she takes part in the World Irish Dancing Championships on March 25, 2018 in Glasgow, Scotland. The World Irish Dancing Championships are taking place in Glasgow this week at the Royal Concert Hall, with more than 14,500 dancers and supporters expected to travel to the championships which has run for more than forty years. (Photo by Jeff J. Mitchell/Getty Images)

Natan Bontje, aged nine and who recently competed as the youngest participant in the recently concluded Asian Surfing Tour 2018, rides a wave during surfing practice at Kuta beach near Denpasar on Indonesia' s resort island of Bali on May 6, 2018. (Photo by Sonny Tumbelaka/AFP Photo)

Boys, who are experiencing the lives of Buddhist monks by staying in a temple for two weeks as novice monks, look at a tiger at the Everland amusement park in Yongin, South Korea, May 15, 2018. (Photo by Kim Hong-Ji/Reuters)

Dana, 8, granddaughter of Petr Smotrich, a furnace operator at Aksu Ferroalloys Plant since 1978, draws as she plays in her grandfather's apartment in the town of Aksu, north-eastern Kazakhstan, February 22, 2018. (Photo by Shamil Zhumatov/Reuters)

Eleanor and Margaret Santana pose for a photograph in St. Patrick's Cathedral, during the annual Easter Parade and Bonnet Festival in the Manhattan borough of New York City, New York, U.S., April 1, 2018. (Photo by Gaia Squarci/Reuters)

Children jump rope as they play at the Kakuma refugee camp in northern Kenya, March 5, 2018. (Photo by Baz Ratner/Reuters)

A girl sits outside her home at the Kakuma refugee camp in northern Kenya, March 5, 2018. (Photo by Baz Ratner/Reuters)

Hindu devotees (not pictured) touch a child with their feet as part of a ritual to bless him during a religious procession held to mark the Gajan festival in Kolkata, India, April 13, 2018. (Photo by Rupak De Chowdhuri/Reuters)

A gild holds a placard during a protest against the rape of an eight-year-old girl in Kathua, near Jammu, in Kochi, India April 15, 2018. (Photo by Sivaram V/Reuters)

A girl holds a butterfly as she visits the White River Gardens in Indianapolis, Indiana April 17, 2018. (Photo by Zohra Bensemra/Reuters)

A novice monk reacts after getting his head shaved by a Buddhist monk during an event to celebrate the upcoming Vesak Day, birthday of Buddha, at Jogye temple in Seoul, South Korea, May 2, 2018. (Photo by Kim Hong-Ji/Reuters)

Children carry an image of Jesus Christ while taking part in a Holy Week procession in Lima, Peru, Sunday, April 1, 2018. Processions take place throughout Peru during the Easter Holy Week. (Photo by Rodrigo Abd/AP Photo)

A girl participates in an Easter Sunday procession representing the resurrection of Christ, in the Brazilian historic city of Ouro Preto, Minas Gerais State, on April 1, 2018. (Photo by Douglas Magno/AFP Photo)

A girl from the Baoule community washes a child on March 31, 2018 in Assounvoue village, central Ivory Coast, on the eve of “Paquinou”, easter celebration traditionally marked by “palaver”, reconciliation, feast, music and dance. (Photo by Sia Kambou/AFP Photo)

A young girl blows dandelion seeds in the air in a park in Frankfurt, Germany, on a sunny Thursday, May 3, 2018. (Photo by Michael Probst/AP Photo)